The company, controlled by Hong Kong billionaire Li Ka-shing, reported a net loss of C$603 million ($480.32 million), or 65 Canadian cents per share, in the fourth quarter ended Dec 31, compared with a net income of C$177 million, or 18 Canadian cents, a year earlier.

The company took a non-cash charge of C$622 million related to the impairment of mature assets in Western Canada. ($1 = C$1.2554 ) (Reporting by Sneha Banerjee and Nia Williams; Editing by Don Sebastian)